تحلیل عددی تأثیر خرج گود با آستری دوجنسی بر قطر حفره و عمق نفوذ در اهداف فولادی

نوع مقاله : مکانیک جامدات

نویسندگان

1 دانشگاه آزاد اسلامی/واحد علوم و تحقیقات/تهران/ایران

2 دانشگاه تربیت مدرس

3 دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران

4 دانشگاه صنعتی مالک اشتر

چکیده

یکی از اجزای اصلی به­کار رفته در خرج گود، آستری می‌باشد که جنس آن‌ تأثیر بسیار زیادی در عملکرد تشکیل جت و نفوذ دارد. در سال‌های اخیر پژوهش در زمینه‌ اثر دوجنسی نمودن آستری‌ها در رفتار خرج گود اهمیت پیدا کرده است. در این مقاله، ابتدا فرآیند تشکیل جت و نفوذ در هدف فولادی، برای یک خرج گود مسی با استفاده از نرم‌افزار انسیس- اتوداین شبیه­سازی عددی شده است. با استفاده از تئوری‌های پرِ تعمیم‌یافته برای تشکیل جت، و تئوری هیدرودینامیک برای نفوذ، حل تحلیلی صورت گرفته و آزمون عملی نیز برای خرج گود مسی انجام شده است. نفوذ حاصل از سه روش عددی، تجربی و تحلیلی تطابق خوبی را نمایش می­دهند. سپس فرآیند شبیه­سازی عددی فوق که صحت­سنجی شده است برای دو خرج گود تک‌جنسی با آستری‌های نیکلی و آلومینیومی، و دو خرج گود با آستری دو‌جنسی مس- نیکل و مس- آلومینیوم ادامه یافته است. سرعت نوک جت، عمق نفوذ و قطر دهانه‌ نفوذ از جمله مواردی هستند که میان آستری­های تک­جنسی و دوجنسی مورد مقایسه قرار گرفته است. نتایج حاصل از مقایسه بین عملکرد خرج گودهای تک‌جنسی و دوجنسی، در شکل‌گیری جت و نفوذ در هدف فولادی نشان می‌دهد که دوجنسی نمودن آستری‌ها قطر حفره و عمق نفوذ را به­طور هم­زمان بهبود می­دهد.

کلیدواژه‌ها

عنوان مقاله [English]

Numerical Analysis of Shaped Charge Bimetallic Liners Effects on Diameter and Depth of Penetration into Steel Targets

نویسندگان [English]

  • hosein mehman navaz 1
  • gholam hosein liaghat 2
  • sadegh rahmati 3
  • mohammad najafi 3
  • hamid fazeli 4
1 azad olom tahghighat
2 tarbiat modarres
3 azad olom tahghighat
4 malek ashtar
چکیده [English]

One of the main important components which are used in the shaped charges is liner that its material has a considerable influence on the jet formation and penetration profile. In recent years, researches have focused on the analysis of the effect of bimetallic liners and their effective behavior. In this paper, at the first step, the process of jet formation and the penetration in the steel target is numerically simulated for a shaped charge with copper liner using the Ansys-Autodyn software. Analytical solutions have been done using generalized PER theory for jet formation and hydrodynamics theory for penetration; as well the experimental tests were performed with copper liner. The comparison of penetration profiles obtained from numerical, experimental and analytical methods showed a good agreement. Then, the validated numerical simulations were developed for two single-metal liners of nickel and aluminum, and two bimetallic copper-nickels, and copper-aluminum liners. Also, the results of jet tip velocity, penetration depth and crater diameter have been compared between single and bimetallic liners. Regarding to jet formation and penetration in steel target, the comparison between single and bimetallic liners results shows that the using bimetallic liners, improve crater diameter and depth of penetration simultaneously.
  
of the main important components which are used in the shaped charges is liner that its material has a considerable influence on the jet formation and penetration profile. In recent years, researches have focused on the analysis of the effect of bimetallic liners and their effective behavior. In this paper, at the first step, the process of jet formation and the penetration in the steel target is numerically simulated for a shaped charge with copper liner using the Ansys-Autodyn software. Analytical solutions have been done using generalized PER theory for jet formation and hydrodynamics theory for penetration; as well the experimental tests were performed with copper liner. The comparison of penetration profiles obtained from numerical, experimental and analytical methods showed a good agreement. Then, the validated numerical simulations were developed for two single-metal liners of nickel and aluminum, and two bimetallic copper-nickels, and copper-aluminum liners. Also, the results of jet tip velocity, penetration depth and crater diameter have been compared between single and bimetallic liners. Regarding to jet formation and penetration in steel target, the comparison between single and bimetallic liners results shows that the using bimetallic liners, improve crater diameter and depth of penetration simultaneously.
 
حلیل عددی تأثیر خرج گود با آستری دوجنسی بر قطر حفره و عمق نفوذ در اهداف فولادی
 

کلیدواژه‌ها [English]

  • Bi-metallic Liner
  • Shaped Charge
  • Penetration Depth
  • Crater Hole Diameter
  • Jet Tip Velocity

مراجع

  1. Walters W. P. and Golaski S. K. “Hemispherical and Conical Shaped Charge Liner Collapse and Jet Formation”, Army Ballistic Research Lab Aberdeen Proving Ground MD; Tech. Rep. ARBRL-TR-2781, 1987.##
  2. Schilling, T. J. “Reactive-Injecting Follow-Through Shaped Charges from Sequent-Material Conical Liners”, Propellants, Explosives, Pyrotechnics:  Int. J. Sci. Tech. Aspects Energetic Mat., Vol. 32, No. 4, pp. 307-313, 2007.##
  3. Mason, J. S. “Experimental Testing of Bimetallic and Reactive Shaped Charge Liners”, Master Dissertation, Graduate College of the University of Illinois at Urbana-Champaign, 2010.##
  4. Tie-Fu, W. and He-Rong, Z. “Copper-Tungsten Shaped Charge Liner and its Jet”, Propellants, Explosives, Pyrotechnics: Int. J. Sci. Tech. Aspects Energetic Mat., Vol. 21, pp. 193-196, 1996.##
  5. Yu, Z., Xiao-ming W., Wen-bin L. and Wen-jin Y. “Effects of Materials on Formation of Double-Layered Liners Shaped Charges”, Advanced Materials Research, Trans. Tech. Publications, Vol. 79, No. 89, pp. 1277-1280, 2009.##
  6. Curtis, J. P., Smith F. T. and White A. H. “The Formation and Stretching of Bi-Material Shaped Sharge Jets”, Shock Compression of Condensed Matter, Conf. Proc. AIP, pp. 116-119, 2012.##
  7. Kim, S. J., Mun S. H., Lee K. A., Lee C. and Lee S. “Manufacturing and Evaluating for the Two Layer/Explosive Materials and Their Numerical Simulations”, Materials Science Forum, Trans. Tech. Publications, Vol. 767, pp. 52-59, 2014.##
  8. Xiao, Q. Q., Huang, Z.X., Zu, X.D. and Zhu C. S. “Penetration Research of Jacketed Jet Into Concrete”, Int. J. Impact Eng., Vol. 54, pp. 246-253, 2013.##
  9. Dong, W. I., Liu, J. X., Cheng, X. W., Li, S. K., Zou, Q. H. and Guo, W.Q. “Penetration Performance of W/Cu Double-Layer Shaped Charge Liners”, Rare Metals, Vol. 35, No. 2, pp.184-191, 2016.##

10. Zukas, J. A. and Walters, W. P. “Fundamentals of Shaped Charges”, CMC Press, Baltimore, 1989.##

11. Sarana, S., Ayisit O. and Yavuza, M. S. “Experimental Investigations on Aluminum Shaped Charge Liners”, Proc. Eng., Vol. 58, pp. 479 - 486, 2013.##

12.  Dashtian Gerami, N., Liaghat G.H. and Rahimi Sharbaf Moghadas, G.H. “Investigation of Performance of Anti Structure Tandem Projectiles in to the Concrete Targets by Experimental and Numerical Method”, J. Modares Mech. Eng. Vol. 16, No. 10, pp. 9-18, 2016. (in Persian)##

13. Dashtian Gerami, N., Liaghat G.H., Rahimi Sharbaf Moghadas G.H., and Khazraiyan N., “Experimental and Numerical Analysis of the Follow Warhead Penetration of Tandem Projectiles in to the Finite Concrete Targets”, J. Iranian Sci. Asso. Energetic Mat., Vol. 11, No. 3, pp. 37-46, 2016. (in Persian)##

14. Bolstad, J. and Mandell D. “Calculation of Shaped Charge Jet Using MESA-2D and MESA-3D Hydrodynamic Computer Codes”, Los Alamos National Laboratory, New Mexico, 1992.##

15. Dashtian Gerami, N., Liaghat, G.H., Rahimi Sharbaf Moghadas, G.H. and Khazraiyan, N. “Analysis of Liner Effect on Shaped Charge Penetration into Thick Concrete Targets”, J. Braz. Soc. Mech. Sci. Eng, Vol. 39, pp. 3189-3201, 2017.##

فایل ها

سابقه مقاله

  • تاریخ دریافت: 15 اردیبهشت 1397
  • تاریخ پذیرش: 17 مهر 1397
  • تاریخ انتشار: 01 آذر 1398

هم رسانی

ارجاع به این مقاله

آمار